...-tech nano material glass nail film nontoxic strippable nailpolish. The newest formula of nail nano film from Canada which can be stripped. 1. Odorless, No small bubble, No Impurities, Eco-friendly polish 2. No nicks, no...

Photochromic pigment is microcapsule ,it can absorb the energy of sunshine or UV light to change the molecular structure ,to cause to change absorption wavelength ,then the powder had changed color . This process is reversible ,so the UV source is removed...